%0 Conference Proceedings
%T Direct comparison of the sensitivity of a spiral and a twin-slot antenna coupled HEB mixer at 1.6 THz
%A Gao, J. R.
%A Hiajenius, M.
%A Yang, Z. Q.
%A Klapwijk, T. M.
%A Miao, W.
%A Shi, S. C.
%A Voronov, B.
%A Gortsman, G.
%S Proc. 17[super:th] Int. Symp. Space Terahertz Technol.
%D 2006
%F Gao_etal2006
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1436), last updated on Sun, 16 May 2021 22:11:49 -0500
%X To make a direct comparison of the sensitivity between a spiral and a twin slot antenna coupled HEB mixer, we designed both types of mixers and fabricated them in a single processing run and on the same wafer. Both mixers have similar dimensions of NbN bridges (1.5-2 pm x0.2 pm). At 1.6 THz we obtained a nearly identical receiver noise temperature from both mixers (only 5% difference), which is in a good agreement with the simulation based on semi analytical models for both antennas. In addition, by using a bandpass filter to reduce the direct detection effect and lowering the bath temperature to 2.4 K, we measured the lowest receiver noise temperature of 700 K at 1.63 THz using the twin-slot antenna mixer.
%K NbN HEB mixers
%U https://www.nrao.edu/meetings/isstt/2006.shtml
%P 59-62